Steam for Linux

Even if they can't be played on Linux, we should be able to download them. Put some big warning signs everywhere, hide the function in submenus etc so people can't expect windows game to work. Official support should not be expected.

The reason for this is because there are several external software using game assets and I currently need to download them illegally even tho I own them on Steam. I would like to be able to download my legally bought Windows version of Duke Nukem 3D so I can use it legally with the perfectly legal source port eduke32. Same with Doom, Jedi Academy, etc.

It would also allow the use of Dosbox games for people using a different version of Dosbox.

(edit) I am NOT asking for Wine support. I just want to be able to download the software I own regardless of the OS I'm using.

We can't rely on dev / publisher and expect every one of them to make a Linux version (not made by them). Duke Nukem 3D is a popular example but these projects can affect any game really. Just yesterday I heard about http://openxcom.org/ which is a recreation of the first Xcom game for modern platforms. This as usual requires the original assets found in the installation files. Again I can't use my legitimally bought copy of Xcom and I have to resort to other means to be able to use this software.